BQ76905 Series
Low-power monitor and protector for 2S to 5S with high accuracy cell voltage measurement
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Low-power monitor and protector for 2S to 5S with high accuracy cell voltage measurement
| Part | Battery Chemistry | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Number of Cells [Min] [custom] | Number of Cells [Max] [custom] | Function | Mounting Type | Fault Protection | Interface |
|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ76905RGRR | Multi-Chemistry | 110 °C | -40 °C | 20-VFQFN Exposed Pad | 2 | 5 | Multi-Function Controller | Surface Mount | Over Current, Over Temperature, Over/Under Voltage | I2C |
Key Features
• Battery monitoring capability for 2-series to 5-series cellsIntegrated low-side drivers for NFET protection with optional autonomous recoveryExtensive protection suite including voltage, temperature, current, and internal diagnostics16-bit delta-sigma voltage ADCHigh-accuracy cell voltage measurement of 4 mV (typical)A dedicated simultaneous 16- and 24-bit delta-sigma coulomb counter ADCHigh-accuracy current measurement with low input offset errorWide-range current applications (±200-mV measurement range across sense resistor)48-bit accumulated charge integrator with timerHost-controlled cell balancingMultiple power modes (typical battery pack operating range conditions)NORMAL mode: 32 µA to 175 µASLEEP mode: 6 µADEEPSLEEP mode: 2.7 µASHUTDOWN Mode: <1 µAHigh voltage tolerance of 45 V on cell connect and select additional pinsSupport for temperature sensing using an internal sensor and external thermistorIntegrated one-time-programmable (OTP) memory for device settings, programmed by TI400-kHz I 2C serial communications with optional CRC supportProgrammable LDO for external system usage20-pin QFN (RGR) packageBattery monitoring capability for 2-series to 5-series cellsIntegrated low-side drivers for NFET protection with optional autonomous recoveryExtensive protection suite including voltage, temperature, current, and internal diagnostics16-bit delta-sigma voltage ADCHigh-accuracy cell voltage measurement of 4 mV (typical)A dedicated simultaneous 16- and 24-bit delta-sigma coulomb counter ADCHigh-accuracy current measurement with low input offset errorWide-range current applications (±200-mV measurement range across sense resistor)48-bit accumulated charge integrator with timerHost-controlled cell balancingMultiple power modes (typical battery pack operating range conditions)NORMAL mode: 32 µA to 175 µASLEEP mode: 6 µADEEPSLEEP mode: 2.7 µASHUTDOWN Mode: <1 µAHigh voltage tolerance of 45 V on cell connect and select additional pinsSupport for temperature sensing using an internal sensor and external thermistorIntegrated one-time-programmable (OTP) memory for device settings, programmed by TI400-kHz I 2C serial communications with optional CRC supportProgrammable LDO for external system usage20-pin QFN (RGR) package